Bed.



G. W. YARRINGTON.

BED.

APPLIUATION FILED JULY 11, 1913.

Patented June 2, 1914.

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G. W. YARRINGTON.

BED.

APPLICATION FILED JULY 11, 1913.

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G. W. YARRINGTON.

BED.

APPLICATION FILED JULY 11, 1913. 1,098,41 9. Patented June 2, 1914.

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BED.

Specification of Letters Patent.

Patented June 2, 1914.

Application filed July 11, 1913. Serial No.- 773,583.

To all whom it may concern Be it known that I, GEORGE "W. YAnR No- TON, a citizen of the United States, residing at Kenmore, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Beds, of which the following is a specification.

My invention relates to beds, particularly to that class of beds designed and adapted for the use of invalids, and has for its object the provision of a bed structure consisting of a main bed and a movable supporting frame adapted to support a patient and capable of being disposed upon the main bed or elevated above it to facilitate the changing of the bed linen, to allow free circulation of air under the patient and to afford greater conveniences during the operation of defecation, the movable frame being also easily tilted at an angle if desired.

Another important object is to provide an adjustable back and head rest capable of being fixed at various angles or removed as desired.

Still another object is to provide a bed of this character provided with elevating means whereby there is no possibility of a sudden descent of the movable portion or support into its lowest position, thus eliminating the possibility of accident or injury to the patient.

Other objects and advantages such as eliiciency, durability, and the general improveient of the art in regard to the special. details of construction will be carefully brought out in the following specification and illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of the bed in its normal position, Fig. 2 is a vertical sectional view, the movable supporting frame being in its elevated position, the canvas strips beingremoved, Fig. 3 is an end view, lis a cross-sectional view on the line t e of Fig. 2, Fig. 5 is a cross-sectional view on the line 55 of Fig. 1, Fig. 6 is a top plan view, and Fig. 7 is a detail view.

Referring more particularly to the draw ings, the ninneral l designates a preferably rectangular frame supported on legs The frame 1 is provided with the usual spring and mattress 3 of any well known type. Rigidly secured at the ends of the frame 1 are upright posts 4: formed hollow, as shown, and provided upon their inner faces with slots 5.

The movable support comprises a rectangular frame 6 disposed above the frame 1, and longitudinal and transverse strips 7 of canvas or webbing interlaced and secured to the f. ame 6. Portions of certain of the strips 7 are cut away to form an opening which is adapted to be closed by a species of trap door formed of strips 8 which are adapted to be secured to the strips 7 by means of catches or snaps 9 similar to glove fasteners, or by buttons or any other suitable means. Upon the ends of the frame 6 are secured trunnions 10 which extend through the slots 5 into the interior of the posts 4:.

The ends of the trunnions 10 pass through. openings formed in vertical rods 11 which are disposed within the posts t and extend upwardly. The rods 11 are provided intermediate their ends with lateral projections 12 for a purpose to be described.

Ashaft 18 extends longitudinally of the bed and is journaled through the posts l. A crank handle 14 is secured upon one end of the shaft 13. Disposed upon the shaft 13 within the posts 4- are sprocket wheels 15 about which are trained sprocket chains 16 which have one of their ends connected with the movable frame 6 through the medium of rods ul links 17 provided upon their ends with snaps 1S engaging eye-bolts 19 secured at the corners of the frame 6. The other ends of the chains 16 are provided with counter-balancing weights Secured upon one end of the shaft 13 adjacent the post l is a ratchet wheel 21 en gaged by a pawl 22 pivoted as at 23 upon the post 4t. The pawl 22 may be held out of engagement with the ratchet by means of a rod 24- secured to the pawl and extending through the overhanging edge of one of the caps 25 mounted on the posts 4. The rod 24 is provided with a finger engaging ring 26 and a lateral extension 27 adapted to catch upon the edge of the keyhole opening 28 to mod in the cap 25.

The vertical rods 11 connected with the frame 6 extend through openings 29 formed in the caps 25 and are adapted to have their projections 12 engage buttons or hooks 3O pivoted as at 31 upon the caps 25 and adapt ed to swing over the slots or openings 29. Springs 32 are secured upon the caps 25 and bear against the edges of the rods 11 to hold them in engagement with the buttons or hooks 30.

Permanent head and foot boards 33 are connected with the frame 6 as by brackets 34. My improved adjustable head and back rest structure comprises a U shaped bar pivotally connected with the sides of the frame 6 as at 36. Pivotally connected with the arms 37 of the bar 35, as shown at 38, are arms 39 of a U shaped bar 40. To the arms 37 are secured transverse strips 41 of canvas or webbing, and to the arms 39 are secured strips 42. Longitudinal strips 43 are connected with the bar and are interlaced with the strips 42 and 43 and are then secured to the longitudinal strips 7 upon the frame 6. The angular position of the bar 40 in relation to the bar 35 may be varied by means of links 44 secured upon the arms 39 as at 45 and provided with slots 46 engaged by clamping nuts and screws 47 disposed upon the arms 39.

The mechanism for raising the entire back and head rest structure comprises a cable or wire 48 provided at one end with a hook 49 in engagement with the bar 35. The cableor wire 48 is trained about pulleys 5O mounted upon the posts 4 and is then secured to the trunnion 10 upon the foot of the frame 6.by means of a hook 51.

The operation of the bed is as follows: When the frame 6 is in its normal or lowest position the canvas strips 7 rest upon the mattress 3 and the patient is supported thereby. The back and head rests may then be disposed in the position shown and the patient be reclining against them or by dis engaging the hook 49 the back and head rests may be laid flat, and the patient be ly ing at full length upon the bed. By turning the crank handle 14 the shaft 13 and sprockets 15 will be rotated, thus elevating the frame 6 by virtue of the chains 16 and rods 17. As the frame is elevated the trunnions 10 will ride in the slots 5, and the vertical rods 11 will be carried upward through the openings 29 being pressed into engagement with the buttons or hooks 30 by the springs 32. .Vhen the frame (3 has been elevated to near the maximum hei ht, the projections 12 will pass above the buttons or hooks 30 and engage them, thus forming a catch for preventing the lowering of the frame. While the elevation of the frame 6 is being accomplished and before the projections 12 engage the buttons or hooks 3O accidental lowering of the frame 6 is prevented by the engagement of the pawl 22 with the ratchet 21. Assuming that the back and head rests are engaged by the hook 49 when the bed is in its initial position, the raising of the frame 3 will cause the back and head rests to be automatically lowered into contact with the strips 7. TJhen the frame is elevated air will of course circulate freely under the patient. The bed linen may then be conveniently and easily changed. Also the trap may be opened and a bed-pan placed beneath the patient as occasion demands. After the frame has been elevated as described it may be grasped by the attendant and tilted to either side if desired. Furthermore the snaps 18 may be disengaged from the eye-bolts 19, thus allowing one side of the frame 6 to be disposed upon the mattress 3 for moving a patient from the mattress to the movable frame, or vice 'versa. In order to lower the frame 6 to its original position it is merely necessary to turn the crank 14 slightly to release the projections 12 on the rods 11 from engagement with the buttons or hooks 30, then swing the buttons or hooks 30 out of the path of the projections 12, and then allow the crank 14 to turn slowly until the frame 6 has again come into contact with the mattress 3. This lowering of the movable frame will lift the back and head rests upwardly to the posi tion shown in Fig. 1 to support the patient comfortably.

It will be seenthat thus a structure is provided which is adapted to meet all the requirements for a convenient and eflicient invalid bed for either domestic or hospital use.

Having thus described my. invention what I claim is:

1. An invalid bed structure comprising a stationary bed portion, supports secured thereto, aframe disposed above said bed portion and vertically movable upon said supports, means detachablv connected with said movable frame for elevating it, and means for maintaining said movable frame in its elevated position, said movable frame being provided with extensions at its longitudinal axis upon which it may be rotated.

2. An invalid bed structure comprising a stationary bed portion, supports secured thereto, a frame vertically movable on said supports, extensions, on said frame at its longitudinal axis and disposed in slots formed in said supports; means for elevating said movable frame, said means comprising winding mechanism detachably connected with said movable frame, and means for maintaining said movable frame in its elevated position.

3. An invalid bed structure comprising a stationary bed portion, supports secured thereto, a frame vertically movable and revoluble on said supports, sprockets journaled in said supports and provided with a crank, chains trained about said sprockets and connected with said movable frame at its sides, and means for maintaining said movable frame in its elevated position, said neang comprising members connected with said movable frame and movable therewith and catches on said supports adapted to be moved so as to be engaged by project-ions on said members.

4. An invalid bed structure comprising a stationary bed portion, supports secured thereto, guideways formed in said supports, a vertically movable frame, extensions on the ends of said frame and disposed in said guideways, sprockets journaled in said supports, chains trained about said sprockets and connected with said movable frame, a ratchet and releasable pawl on the shaft of one of said sprockets, and means for maintaining the movable frame in its elevated position, said means comprising rods connected with said movable frame, movable vertically therewith and adapted to engage releasable catches on said supports.

5. An invalid bed structure comprising a stationary bed portion, supports secured thereto and provided with vertical slots, a movable frame provided with extensions slid-able in said slots, a shaft journaled through said supports and provided with a crank handle, sprockets secured on said shafts, chains trained about said sprockets, links connected with said chains and said movable frame, a ratchet secured on said shaft, a pawl adapted to be held in or out of engagement with said ratchet, rods connected with said movable frame and adapted to engage releasable catches on said supports.

6. An invalid bed structure comprising a stationary bed portion, supports secured thereto and provided with vertical slots, a movable frame provided with extensions slidable in said slots, a shaft journaled through said supports and provided with a crank handle, sprockets secured on said shafts, chains trained about said sprockets, links connected with said chains and said movable frame, a ratchet secured on said shaft, a pawl adapted to be held in or out of engagement with said ratchet, rods connected with said movable frame and adapted to engage releasable catches on said supports and a back and head rest connected with said movable frame and adapted to be moved automatically in unison therewith.

7. An invalid bed structure comprising a stationary bed portion, supports secured thereto and provided with vertical slots, a frame provided with trunnions slidably and revolubly mounted in said slots, said frame comprising interlaced canvas strips and provided with a trap, a shaft journaled in said supports and provided with a crank, a ratchet secured on said shaft and engaged by a releasable pawl, chains trained about said sprockets and provided with counterbalancing weights, links connected with the other ends of said chains and detachably connected with said movable frame, rods connected withsaid movable frame, and catches on said supports adapted to be engaged by said rods.

8. An invalid bed structure comprising a stationary bed portion, supports connected therewith, a frame movable on said sup ports, means for elevating said movable frame, a back and head rest mounted on said movable frame, and a wire connected at one end with said rest and trained about pulleys secured on said supports and detachably connected at its other end with said movable frame.

9. An invalid bed structure comprising a stationary bed portion, supports secured thereto and provided with vertical slots, a movable frame provided with extensions slidable in said slots, a shaft journaled through said supports and provided with a crank handle, sprockets secured on said shafts, chains trained about said sprockets, links connected with said chains and said movable frame, a ratchet secured on said shaft, a pawl adapted to be held in or out of engagement with said ratchet, rods connected with said movable frame and adapted to engage releasable catches on said supports, a back rest angularly adjustable upon said frame, and a head rest adjustably connected with said back rest, said back rest being adapted to be moved automatically in unison with said frame.

10. An invalid bed structure comprising a stationary bed portion, supports secured thereto and provided with vertical slots, a movable frame provided with extensions slidable in said slots, a shaft journaled through said supports and provided with a crank handle, sprockets secured on said shafts, chain trained about said sprockets, links connected with said chains and said movable frame, a ratchet secured on said shaft, a pawl adapted to be held in or out of engagement with said ratchet, rods connectcd with said movable frame and adapted to engage releasable catches on said supports, a back and head rest adjustably connected with said frame, and means whereby said rest is lowered and raised automatically as said frame is elevated and lowered respec tively.

In testimony whereof I hereto affix my signature in the presence of two witnesses.

GEORGE W. YARRINGTON.

Witnesses:

L. D. SLussnR, W. J. Lane.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

